Jolt table shaped for supporting cope top and telescoping into drag

ABSTRACT

A foundry molding machine utilizing a match-plate and two sets of rubber lined cope and drag slip flasks with two stations; one station assembling one set of flasks with the matchplate therebetween and then rolling over the flask-match-plate assembly to fill the drag with sand while supporting the assembly on the cope and jolting and applying a low pressure preliminary squeeze to the sand within the drag, rolling the assembly back to fill the cope and then supporting the assembly on the sand within the drag for the application of jolt and high pressure squeeze to the sand in both the cope and drag.

United States Patent Miller et al.

[ 1 JOLT TABLE SHAPED FOR SUPPORTING COPE TOP AND TELESCOPING INTO DRAG [75] Inventors: Leon F. Miller, Rocky River; Henry J. Herbruggen, Westlake; Robert G. Shields, Chagrin Falls, all of Ohio The Sherwin-Williams Company, Cleveland, Ohio [22] Filed: Apr. 5, 1971 [2]] Appl. No.: 131,528

Related us. Application Data [73] Assignee:

US. Cl. 164/203 Int. Cl. B22c 15/30 Field of Search 164/206, 203, 212, 207,

[56] References Cited UNITED STATES PATENTS 1,316,166 9/1919 Krause l64/l97X June 11, 1974 3,46I,947 8/1969 Abraham e161. 164/206 x FOREIGN PATENTS OR APPLICATIONS 149,225 3/1955 Sweden 164/212 Primary ExaminerRobert D. Baldwin Attorney, Agent, or Firm--Donnelly, Maky, Renner & Otto 5 7 ABSTRACT A foundry molding machine utilizing a match-plate and two sets of rubber lined cope and drag slip flasks with two stations; one station assembling one set of flasks with the matchplate therebetween and then rolling over the flask-match-plate assembly to fill the drag with sand .while supporting the assembly on the cope and jolting and applying a low pressure preliminary squeeze to the sand within the drag, rolling the assembly back to fill the cope and then supporting the assembly on the sand within the drag for the application of jolt and high pressure squeeze to the sand in both the cope and drag.

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1. In a match-plate molding machine the combination of an assembly of a cope and drag flask with a match-plate therebetween and a jolt table for compacting sand within such flasks against the match-plate; said table including a top surface dimensioned and shaped for peripherally supporting the top of the cope when said assembly is inverted and for telescoping into the drag when said assembly is right side up, and supports on said table beneath the top surface thereof operative to support the bottom of the drag when said assembly is right side up.
 2. A machine as set forth in claim 1 including a jolt ram in said table, and means operative to support said jolt ram on a cushion of air during the jolt operation.
 3. A machine as set forth in claim 1 including upwardly projecting guide pins on each side of said table operative to engage guide bushings in the cope or drag flask when supported on said table as aforesaid.
 4. A machine as set forth in claim 2 including means operative to vent said cushion of air operative to cause the ram and table to be firmly supported when not jolting.
 5. A machine as set forth in claim 1 including hydraulic lift cylinder means for elevating and lowering said table, and means operative to lock the table in a selected elevation. 